Add ability to enable or disable html checkbox checkability

3 files changed, 52 insertions, 2 deletions

diff --git a/src/configuration.rs b/src/configuration.rs
index fe5698b..e995c09 100644
--- a/src/configuration.rs
+++ b/src/configuration.rs
@@ -831,6 +831,38 @@ pub struct CompileOptions {
     /// ```
     pub gfm_footnote_clobber_prefix: Option<String>,
 
+    /// Whether or not GFM task list html `<input>` items are enabled.
+    ///
+    /// This determines whether or not the user of the browser is able
+    /// to click and toggle generated checkbox items. The default is false.
+    ///
+    /// ## Examples
+    ///
+    /// ```
+    /// use markdown::{to_html_with_options, CompileOptions, Options, ParseOptions};
+    /// # fn main() -> Result<(), String> {
+    ///
+    /// // With `gfm_task_list_item_checkable`, generated `<input type="checkbox" />`
+    /// // tags do not contain the attribute `disabled=""` and are thus toggleable by
+    /// // browser users.
+    /// assert_eq!(
+    ///     to_html_with_options(
+    ///         "* [x] y.",
+    ///         &Options {
+    ///             parse: ParseOptions::gfm(),
+    ///             compile: CompileOptions {
+    ///                 gfm_task_list_item_checkable: true,
+    ///                 ..CompileOptions::gfm()
+    ///             }
+    ///         }
+    ///     )?,
+    ///     "<ul>\n<li><input type=\"checkbox\" checked=\"\" /> y.</li>\n</ul>"
+    /// );
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub gfm_task_list_item_checkable: bool,
+
     /// Whether to support the GFM tagfilter.
     ///
     /// This option does nothing if `allow_dangerous_html` is not turned on.
diff --git a/src/to_html.rs b/src/to_html.rs
index 1892ba1..edd397d 100644
--- a/src/to_html.rs
+++ b/src/to_html.rs
@@ -601,7 +601,10 @@ fn on_enter_gfm_table_row(context: &mut CompileContext) {
 /// Handle [`Enter`][Kind::Enter]:[`GfmTaskListItemCheck`][Name::GfmTaskListItemCheck].
 fn on_enter_gfm_task_list_item_check(context: &mut CompileContext) {
     if !context.image_alt_inside {
-        context.push("<input type=\"checkbox\" disabled=\"\" ");
+        context.push("<input type=\"checkbox\" ");
+        if !context.options.gfm_task_list_item_checkable {
+            context.push("disabled=\"\" ");
+        }
     }
 }
 
diff --git a/tests/gfm_task_list_item.rs b/tests/gfm_task_list_item.rs
index 8b3f066..b65681d 100644
--- a/tests/gfm_task_list_item.rs
+++ b/tests/gfm_task_list_item.rs
@@ -2,7 +2,7 @@ use markdown::{
     mdast::{Emphasis, List, ListItem, Node, Paragraph, Root, Text},
     to_html, to_html_with_options, to_mdast,
     unist::Position,
-    Options, ParseOptions,
+    CompileOptions, Options, ParseOptions,
 };
 use pretty_assertions::assert_eq;
 
@@ -27,6 +27,21 @@ fn gfm_task_list_item() -> Result<(), String> {
     );
 
     assert_eq!(
+        to_html_with_options(
+            "* [x] y.",
+            &Options {
+                parse: ParseOptions::gfm(),
+                compile: CompileOptions {
+                    gfm_task_list_item_checkable: true,
+                    ..CompileOptions::gfm()
+                }
+            }
+        )?,
+        "<ul>\n<li><input type=\"checkbox\" checked=\"\" /> y.</li>\n</ul>",
+        "should support option for enabled (checkable) task list item checks"
+    );
+
+    assert_eq!(
         to_html_with_options("*\n    [x]", &Options::gfm())?,
         "<ul>\n<li>[x]</li>\n</ul>",
         "should not support laziness (1)"